Please assist - I cannot identify this device. I try to label all my SMT components, but this one has slipped through the net.

It appears to have a "f" as a logo; the text blocks are P636F; FDS and 6690A.

Also, as a more general question, what resources are recommended for tracking down such items?

photo of device


Google is your first choice. Searching for FDS 6690A brought up this datasheet on the first page. The "F" would indicate that it was originally a Fairchild product, which ON semi acquired some time ago.

FDS6690A Single N-Channel, Logic-Level, PowerTrench MOSFET

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  • \$\begingroup\$ Thanks. I was searching on the wrong term - P636F produced nothing. \$\endgroup\$ – henros Feb 18 at 16:20
  • \$\begingroup\$ Usually one of the markings is a datecode and/or manufacturing location. Searching for all the markings will likely get a correct hit. google.com/search?q=P636F+FDS+6690A \$\endgroup\$ – Phil G Feb 18 at 16:44

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